JP6959728B2 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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JP6959728B2
JP6959728B2 JP2016216653A JP2016216653A JP6959728B2 JP 6959728 B2 JP6959728 B2 JP 6959728B2 JP 2016216653 A JP2016216653 A JP 2016216653A JP 2016216653 A JP2016216653 A JP 2016216653A JP 6959728 B2 JP6959728 B2 JP 6959728B2
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movable
conductive plate
contact
fixed
hole
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JP2018073795A (en
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和男 窪野
拓治 村越
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Fujitsu Component Ltd
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Fujitsu Component Ltd
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Priority to JP2016216653A priority Critical patent/JP6959728B2/en
Priority to US15/705,408 priority patent/US10546707B2/en
Priority to CN201711024633.6A priority patent/CN108022799B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Description

本発明は、電磁継電器に関する。 The present invention relates to an electromagnetic relay.

従来より、通電容量を増やすために、可動ばね及び導電補助部材に可動接点を固定する電磁継電器が知られている（例えば、特許文献１参照）。また、複数の導電板を重ね合わせて通電容量を増やした電磁継電器が知られている（例えば、特許文献２参照）。 Conventionally, an electromagnetic relay that fixes a movable contact to a movable spring and a conductive auxiliary member in order to increase the energizing capacity has been known (see, for example, Patent Document 1). Further, there is known an electromagnetic relay in which a plurality of conductive plates are superposed to increase the energizing capacity (see, for example, Patent Document 2).

特開２０１５−１９１８５７号明細書JP-A-2015-191857 特開２０１５−１８７６３号明細書JP-A-2015-18763

ところで、通電容量を増やす場合、接点に印加される電流が増加し、接点で発生する熱も増加するため、接点のサイズを大きくする必要がある。しかし、可動ばね又は導電板の大きさによっては、接点のサイズを大きくすると可動ばね又は導電板から接点がはみ出してしまう。可動ばね又は導電板から接点がはみ出すと、接点から可動ばね又は導電板に電流や熱を効率的に伝えられなくなるという課題がある。 By the way, when the energizing capacity is increased, the current applied to the contact increases and the heat generated at the contact also increases, so that it is necessary to increase the size of the contact. However, depending on the size of the movable spring or the conductive plate, if the size of the contact is increased, the contact may protrude from the movable spring or the conductive plate. If the contact protrudes from the movable spring or the conductive plate, there is a problem that current or heat cannot be efficiently transferred from the contact to the movable spring or the conductive plate.

本発明の目的は、導電板に電流や熱を効率的に伝えることができ、且つ通電容量を増やすことができる電磁継電器を提供することにある。 An object of the present invention is to provide an electromagnetic relay capable of efficiently transmitting current and heat to a conductive plate and increasing the current-carrying capacity.

上記目的を達成するため、明細書に開示された電磁継電器は、固定接点を有する固定端子と、第１貫通孔が形成された可動片を含む可動ばねと、第２貫通孔を有する導電板と、前記固定接点と接離する頭部と、前記第１貫通孔及び前記第２貫通孔に挿通される脚部とを有する可動接点とを備え、前記導電板は、前記頭部と前記可動ばねとの間に配置され、前記第１貫通孔及び前記第２貫通孔の径方向において前記頭部は前記導電板の外縁からはみ出さず、前記可動片の外縁からはみ出すことを特徴とする。 In order to achieve the above object, the electromagnetic relay disclosed in the specification includes a fixed terminal having a fixed contact, a movable spring including a movable piece having a first through hole formed therein, and a conductive plate having a second through hole. The conductive plate includes a head that comes into contact with and separates from the fixed contact, and a movable contact having a first through hole and a leg that is inserted into the second through hole, and the conductive plate has the head and the movable spring. It is characterized in that the head does not protrude from the outer edge of the conductive plate but protrudes from the outer edge of the movable piece in the radial direction of the first through hole and the second through hole.

本発明の電磁継電器によれば、導電板に電流や熱を効率的に伝えることができ、且つ通電容量を増やすことができる。 According to the electromagnetic relay of the present invention, current and heat can be efficiently transferred to the conductive plate, and the energization capacity can be increased.

本実施の形態に係る電磁継電器（以下、リレーという）１の分解図である。It is an exploded view of the electromagnetic relay (hereinafter referred to as a relay) 1 which concerns on this embodiment. リレー１の斜視図である。It is a perspective view of a relay 1. 接極子１６の側面図である。It is a side view of the polaron 16. （Ａ）は、可動ばね１８の正面図である。（Ｂ）は、可動ばね１８の側面図である。（Ｃ）は、可動接点３６ａ及び３６ｂが取り付けられた可動ばね１８を示す図である。(A) is a front view of the movable spring 18. (B) is a side view of the movable spring 18. (C) is a figure which shows the movable spring 18 to which the movable contact 36a and 36b are attached. （Ａ）は、導電板４０の正面図である。（Ｂ）は、可動接点３６ａ及び３６ｂの構成図である。（Ｃ）は、可動接点３６ａが可動ばね１８及び導電板４０に取り付けられた状態を示す部分拡大図である。(A) is a front view of the conductive plate 40. (B) is a block diagram of movable contacts 36a and 36b. (C) is a partially enlarged view showing a state in which the movable contact 36a is attached to the movable spring 18 and the conductive plate 40. （Ａ）は、固定端子２２ａ及び２２ｂの正面図である。（Ｂ）は、固定端子２２ａ及び２２ｂの側面図である。(A) is a front view of the fixed terminals 22a and 22b. (B) is a side view of the fixed terminals 22a and 22b. （Ａ）は、リレー１に流れる電流の向きを模式的に示す図である。（Ｂ）は、固定端子２２ａ側から見た場合のアーク消弧を示す図である。（Ｃ）は、固定端子２２ｂ側から見た場合のアーク消弧を示す図である。FIG. (A) is a diagram schematically showing the direction of the current flowing through the relay 1. FIG. (B) is a diagram showing arc extinguishing when viewed from the fixed terminal 22a side. (C) is a diagram showing arc extinguishing when viewed from the fixed terminal 22b side. （Ａ）は、リレー１に流れる電流の向きを模式的に示す図である。（Ｂ）は固定端子２２ａ側から見た場合のアーク消弧を示す図である。（Ｃ）は固定端子２２ｂ側から見た場合のアーク消弧を示す図である。FIG. (A) is a diagram schematically showing the direction of the current flowing through the relay 1. (B) is a diagram showing arc extinguishing when viewed from the fixed terminal 22a side. (C) is a diagram showing arc extinguishing when viewed from the fixed terminal 22b side. （Ａ）は、可動ばね１８及び導電板４０の第１変形例を示す図である。（Ｂ）は、導電板４０の第２変形例を示す図である。(A) is a figure which shows the 1st modification of the movable spring 18 and the conductive plate 40. (B) is a figure which shows the 2nd modification of the conductive plate 40. （Ａ）は、導電板４０の第３変形例を示す図である。（Ｂ）は図１０（Ａ）の導電板４０の側面図である。（Ｃ）は、導電板４０の第４変形例を示す図である。（Ｄ）は図１０（Ｃ）の導電板４０の側面図である。(A) is a figure which shows the 3rd modification of the conductive plate 40. (B) is a side view of the conductive plate 40 of FIG. 10 (A). (C) is a figure which shows the 4th modification of the conductive plate 40. (D) is a side view of the conductive plate 40 of FIG. 10 (C).

以下、図面を参照しながら本発明の実施の形態を説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本実施の形態に係る電磁継電器（以下、リレーという）の分解図である。図２は、リレーの斜視図である。 FIG. 1 is an exploded view of an electromagnetic relay (hereinafter referred to as a relay) according to the present embodiment. FIG. 2 is a perspective view of the relay.

本実施の形態に係るリレー１は、高電圧対応リレーであり、例えば、電気自動車のバッテリープリチャージ（メインリレー接点への突入電流防止）用リレーとして使用される。 The relay 1 according to the present embodiment is a high-voltage compatible relay, and is used, for example, as a relay for battery precharging (preventing inrush current to the main relay contact) of an electric vehicle.

リレー１は、高電圧の負荷遮断時に、固定接点と可動接点との間に発生するアークを確実に消弧する必要がある。また、一般的な直流高電圧対応リレーでは負荷側の接続に極性の指定があるが、バッテリープリチャージ用リレーであるリレー１では、バッテリー充電時及び放電時に電流方向が互いに逆転するため、負荷側の接続の極性を指定しないことが要求される。従って、リレー１は、可動接点と固定接点との間に流れる電流の向きにかかわらず、アークを消弧する必要がある。尚、リレー１の用途は、電気自動車に限定されるものではなく、様々な装置や設備に利用することができる。 The relay 1 needs to reliably extinguish the arc generated between the fixed contact and the movable contact when the high voltage load is cut off. Further, in a general DC high voltage compatible relay, the polarity is specified for the connection on the load side, but in the relay 1 which is a battery precharge relay, the current directions are opposite to each other when the battery is charged and discharged, so that the load side is connected. It is required not to specify the polarity of the connection. Therefore, the relay 1 needs to extinguish the arc regardless of the direction of the current flowing between the movable contact and the fixed contact. The use of the relay 1 is not limited to the electric vehicle, and can be used for various devices and equipment.

図１に示すように、リレー１は、ケース１０、磁気消弧用の永久磁石１２、ヒンジばね１４、接極子１６、可動ばね１８、導電板４０、絶縁カバー２０、固定端子２２（２２ａ，２２ｂ）、鉄芯２４、スプール２６、ベース２８、コイル３０、一対のコイル端子３２（３２ａ，３２ｂ）、継鉄３４及び固定板４４を備えている。一対のコイル端子３２は、鉄芯２４、スプール２６及びコイル３０を有する電磁石装置３１を励磁するための電流を供給する。 As shown in FIG. 1, the relay 1 includes a case 10, a permanent magnet 12 for magnetic arc extinguishing, a hinge spring 14, a coil 16 and a movable spring 18, a conductive plate 40, an insulating cover 20, and fixed terminals 22 (22a, 22b). ), The iron core 24, the spool 26, the base 28, the coil 30, a pair of coil terminals 32 (32a, 32b), a joint iron 34, and a fixing plate 44. The pair of coil terminals 32 supply an electric current for exciting the electromagnet device 31 having the iron core 24, the spool 26, and the coil 30.

絶縁カバー２０の前端には磁石ホルダー２０ｆが形成されており、磁石ホルダー２０ｆ内に永久磁石１２が保持される。磁石ホルダー２０ｆ及び永久磁石１２は、図２に示すように、固定端子２２ａ，２２ｂの間に配置される。なお、図２ではケース１０を図示省略している。また、例えば、永久磁石１２のＮ極を有する面は固定端子２２ｂ側に向けられており、永久磁石１２のＳ極を有する面は固定端子２２ａ側に向けられている。尚、Ｎ極とＳ極の位置が逆であってもよい。また、交流高電圧の負荷遮断時には永久磁石１２は必要ではないが、永久磁石１２を設けることによりアーク消弧を速やかに行うことができる。 A magnet holder 20f is formed at the front end of the insulating cover 20, and the permanent magnet 12 is held in the magnet holder 20f. As shown in FIG. 2, the magnet holder 20f and the permanent magnet 12 are arranged between the fixed terminals 22a and 22b. In FIG. 2, the case 10 is not shown. Further, for example, the surface of the permanent magnet 12 having the N pole is directed to the fixed terminal 22b side, and the surface of the permanent magnet 12 having the S pole is directed to the fixed terminal 22a side. The positions of the north pole and the south pole may be reversed. Further, although the permanent magnet 12 is not required when the load of the AC high voltage is cut off, the arc can be extinguished quickly by providing the permanent magnet 12.

図１に戻り、ヒンジばね１４は、側面視で逆Ｌ字状に形成されており、接極子１６の垂下部１６ｂをベース２８に向けて下方向に付勢する水平部１４ａと、継鉄３４の垂直部３４ｂに固定される垂下部１４ｂとを備えている。 Returning to FIG. 1, the hinge spring 14 is formed in an inverted L shape in a side view, and has a horizontal portion 14a for urging the hanging portion 16b of the polaron 16 downward toward the base 28, and a joint iron 34. It is provided with a hanging portion 14b fixed to the vertical portion 34b of the above.

接極子１６は、図３に示すように側面視で「く」の字の形状の磁性体であり、鉄芯２４に吸着される平板部１６ａと、屈曲部１６ｃを介して平板部１６ａから下方に延びる垂下部１６ｂとを備えている。さらに、図１および図２に示すように、屈曲部１６ｃの中央には、ヒンジばね１４が突出する貫通孔１６ｄが形成されている。また、平板部１６ａには、継鉄３４の突起部３４ｃが嵌る切り欠き部１６ｅが形成されている。垂下部１６ｂには、可動ばね１８を垂下部１６ｂにかしめ固定するための突起１６ｆが設けられている（図３参照）。 As shown in FIG. 3, the contact electrode 16 is a magnetic material in the shape of a dogleg in a side view, and is downward from the flat plate portion 16a via a flat plate portion 16a adsorbed on the iron core 24 and a bent portion 16c. It is provided with a hanging portion 16b extending to. Further, as shown in FIGS. 1 and 2, a through hole 16d from which the hinge spring 14 projects is formed in the center of the bent portion 16c. Further, the flat plate portion 16a is formed with a notch portion 16e into which the protrusion 34c of the joint iron 34 fits. The hanging portion 16b is provided with a protrusion 16f for caulking and fixing the movable spring 18 to the hanging portion 16b (see FIG. 3).

接極子１６は、継鉄３４の突起部３４ｃに嵌められた切り欠き部１６ｅを支点として回転運動をする。コイル３０に電流が流れると、鉄芯２４が平板部１６ａを吸着する。このとき、ヒンジばね１４の水平部１４ａは垂下部１６ｂと接触し、垂下部１６ｂにより上方向に押される。コイル３０の電流が切断されると、ヒンジばね１４の水平部１４ａの復元力により垂下部１６ｂは押し下げられる。これにより、平板部１６ａは鉄芯２４から引き離される。ここで、鉄芯２４又は絶縁カバー２０に対向する平板部１６ａの面を第１面とし、第１面の裏面を第２面とする。また、継鉄３４又は絶縁カバー２０に対向する垂下部１６ｂの面を第１面とし、第１面の裏面を第２面とする。 The polaron 16 rotates around the notch 16e fitted in the protrusion 34c of the joint iron 34 as a fulcrum. When a current flows through the coil 30, the iron core 24 attracts the flat plate portion 16a. At this time, the horizontal portion 14a of the hinge spring 14 comes into contact with the hanging portion 16b and is pushed upward by the hanging portion 16b. When the current of the coil 30 is cut off, the hanging portion 16b is pushed down by the restoring force of the horizontal portion 14a of the hinge spring 14. As a result, the flat plate portion 16a is separated from the iron core 24. Here, the surface of the flat plate portion 16a facing the iron core 24 or the insulating cover 20 is the first surface, and the back surface of the first surface is the second surface. Further, the surface of the hanging portion 16b facing the joint iron 34 or the insulating cover 20 is the first surface, and the back surface of the first surface is the second surface.

図４（Ａ）は、可動ばね１８の正面図であり、図４（Ｂ）は、可動ばね１８の側面図である。図４（Ｃ）は、可動接点３６ａ及び３６ｂが取り付けられた可動ばね１８を示す図である。図５（Ａ）は、導電板４０の正面図である。図５（Ｂ）は、可動接点３６ａ及び３６ｂの構成図である。図５（Ｃ）は、可動接点３６ａが可動ばね１８及び導電板４０に取り付けられた状態を示す部分拡大図である。 FIG. 4A is a front view of the movable spring 18, and FIG. 4B is a side view of the movable spring 18. FIG. 4C is a diagram showing a movable spring 18 to which the movable contacts 36a and 36b are attached. FIG. 5A is a front view of the conductive plate 40. FIG. 5B is a block diagram of the movable contacts 36a and 36b. FIG. 5C is a partially enlarged view showing a state in which the movable contact 36a is attached to the movable spring 18 and the conductive plate 40.

図４（Ａ）に示すように、可動ばね１８は、正面視でコの字形状の導電性の板ばねであり、例えば、銅合金で構成されている。可動ばね１８は、一対の可動片、即ち第１可動片１８ａ及び第２可動片１８ｂと、第１可動片１８ａ及び第２可動片１８ｂの上端を連結する連結部１８ｃとを備えている。 As shown in FIG. 4A, the movable spring 18 is a U-shaped conductive leaf spring when viewed from the front, and is made of, for example, a copper alloy. The movable spring 18 includes a pair of movable pieces, that is, a first movable piece 18a and a second movable piece 18b, and a connecting portion 18c that connects the upper ends of the first movable piece 18a and the second movable piece 18b.

第１可動片１８ａ及び第２可動片１８ｂは、長手方向における中央より下端に近い位置１８ｄａ及び位置１８ｄｂでそれぞれ折曲加工されている。ここで、第１可動片１８ａの位置１８ｄａより連結部１８ｃ側の部分を上部１８ａ１とし、第１可動片１８ａの位置１８ｄａより先端側の部分を下部１８ａ２とする。同様に、第２可動片１８ｂの位置１８ｄｂより連結部１８ｃ側の部分を上部１８ｂ１とし、第２可動片１８ｂの位置１８ｄｂより先端側の部分を下部１８ｂ２とする。下部１８ａ２及び下部１８ｂ２は可動接点３６ａ及び３６ｂをかしめ固定する平坦部として機能する。 The first movable piece 18a and the second movable piece 18b are bent at a position 18da and a position 18db closer to the lower end than the center in the longitudinal direction, respectively. Here, the portion of the first movable piece 18a on the connecting portion 18c side from the position 18da is referred to as the upper portion 18a1, and the portion of the first movable piece 18a on the tip end side of the position 18da is referred to as the lower portion 18a2. Similarly, the portion of the second movable piece 18b on the connecting portion 18c side from the position 18db is referred to as the upper portion 18b1, and the portion of the second movable piece 18b on the tip end side of the position 18db is referred to as the lower portion 18b2. The lower portion 18a2 and the lower portion 18b2 function as flat portions for caulking and fixing the movable contacts 36a and 36b.

第１可動片１８ａの下部１８ａ２には、可動接点３６ａをかしめ固定するための貫通孔１９ａが設けられている。第２可動片１８ｂの下部１８ｂ２には、可動接点３６ｂをかしめ固定するための貫通孔１９ｂが設けられている。貫通孔１９ａ及び１９ｂは、第１貫通孔として機能する。第１可動片１８ａ及び第２可動片１８ｂは上部１８ａ１及び上部１８ｂ１に対して、可動接点３６ａ及び３６ｂがそれぞれ接触する固定接点３８ａ及び３８ｂから離れる方向にそれぞれ折り曲げられている。 A through hole 19a for caulking and fixing the movable contact 36a is provided in the lower portion 18a2 of the first movable piece 18a. A through hole 19b for caulking and fixing the movable contact 36b is provided in the lower portion 18b2 of the second movable piece 18b. The through holes 19a and 19b function as the first through holes. The first movable piece 18a and the second movable piece 18b are bent with respect to the upper portion 18a1 and the upper portion 18b1 in a direction away from the fixed contacts 38a and 38b with which the movable contacts 36a and 36b are in contact, respectively.

連結部１８ｃには、垂下部１６ｂの突起１６ｆに嵌められる貫通孔１８ｅが形成されている。突起１６ｆを貫通孔１８ｅに嵌めてかしめることで、可動ばね１８は垂下部１６ｂの第１面に固定される。 The connecting portion 18c is formed with a through hole 18e that is fitted into the protrusion 16f of the hanging portion 16b. The movable spring 18 is fixed to the first surface of the hanging portion 16b by fitting the protrusion 16f into the through hole 18e and crimping it.

図４（Ｃ）に示すように、可動接点３６ａ及び３６ｂが可動ばね１８に取り付けられると、可動接点３６ａが下部１８ａ２からはみ出し、可動接点３６ｂが下部１８ｂ２からはみ出す。この場合、可動接点３６ａ及び３６ｂから可動ばね１８に電流や熱を効率的に伝えられなくなる。 As shown in FIG. 4C, when the movable contacts 36a and 36b are attached to the movable spring 18, the movable contacts 36a protrude from the lower portion 18a2, and the movable contacts 36b protrude from the lower portion 18b2. In this case, current and heat cannot be efficiently transferred from the movable contacts 36a and 36b to the movable spring 18.

図５（Ａ）に示す導電板４０は、正面視でコの字形状であり、例えば、銅で構成されている。導電板４０は、可動ばね１８よりも高い導電率及び高い熱伝導率を有する。導電板４０は、一対の脚片、即ち第１脚片４０ａ及び第２脚片４０ｂと、第１脚片４０ａ及び第２脚片４０ｂの上端を連結する連結部４０ｃとを備えている。第１脚片４０ａ及び第２脚片４０ｂの下端には、可動接点３６ａ及び３６ｂを第１可動片１８ａ及び第２可動片１８ｂとともにかしめ固定するための貫通孔４２ａ及び４２ｂがそれぞれ設けられている。貫通孔４２ａ及び４２ｂは可動接点３６ａ及び３６ｂの脚部３６２が挿通する第２貫通孔として機能する。 The conductive plate 40 shown in FIG. 5A has a U-shape when viewed from the front, and is made of, for example, copper. The conductive plate 40 has higher conductivity and higher thermal conductivity than the movable spring 18. The conductive plate 40 includes a pair of leg pieces, that is, a first leg piece 40a and a second leg piece 40b, and a connecting portion 40c that connects the upper ends of the first leg piece 40a and the second leg piece 40b. Through holes 42a and 42b for caulking and fixing the movable contacts 36a and 36b together with the first movable piece 18a and the second movable piece 18b are provided at the lower ends of the first leg piece 40a and the second leg piece 40b, respectively. .. The through holes 42a and 42b function as second through holes through which the legs 362 of the movable contacts 36a and 36b are inserted.

図５（Ｂ）に示すように、可動接点３６ａ及び３６ｂはリベット状であり、固定接点３８ａ及び３８ｂと接触する頭部３６１と、可動ばね１８の貫通孔１９ａ及び１９ｂ並びに導電板４０の貫通孔４２ａ及び４２ｂに挿入される脚部３６２とを備えている。可動接点３６ａ及び３６ｂは、貫通孔１９ａ及び１９ｂの位置と貫通孔４２ａ及び４２ｂの位置とを合わせた状態で導電板４０及び可動ばね１８にかしめ固定される。可動接点３６ａ及び３６ｂが導電板４０及び可動ばね１８にかしめ固定されると、頭部３６１の接触面３６３は導電板４０に接触する。 As shown in FIG. 5B, the movable contacts 36a and 36b are rivet-shaped, and the head 361 in contact with the fixed contacts 38a and 38b, the through holes 19a and 19b of the movable spring 18, and the through holes of the conductive plate 40. It includes legs 362 that are inserted into 42a and 42b. The movable contacts 36a and 36b are caulked and fixed to the conductive plate 40 and the movable spring 18 in a state where the positions of the through holes 19a and 19b and the positions of the through holes 42a and 42b are aligned. When the movable contacts 36a and 36b are caulked and fixed to the conductive plate 40 and the movable spring 18, the contact surface 363 of the head 361 comes into contact with the conductive plate 40.

図５（Ｃ）に示すように、可動接点３６ａを導電板４０及び可動ばね１８にかしめ固定する際、可動接点３６ａの頭部３６１はその径方向において可動ばね１８の下部１８ａ２の外縁からはみ出すが、導電板４０の第１脚片４０ａの外縁からははみ出さないように固定される。同様に、可動接点３６ｂを導電板４０及び可動ばね１８にかしめ固定する際、可動接点３６ｂの頭部３６１はその径方向において導電板４０の第２脚片４０ｂの外縁からはみ出さないように固定される。また、可動接点３６ａ及び３６ｂを導電板４０及び可動ばね１８にかしめ固定する際、導電板４０は、可動ばね１８と接触面３６３との間に配置される。即ち、頭部３６１の接触面３６３は導電板４０に接触する。このように、本実施の形態では、接触面３６３の全体が導電板４０と接触するように導電板４０を可動ばね１８と接触面３６３との間に配置するので、可動接点３６ａ及び３６ｂから導電板４０に電流や熱を効率的に伝えることができ、リレーの通電容量を増大させることができる。 As shown in FIG. 5C, when the movable contact 36a is caulked and fixed to the conductive plate 40 and the movable spring 18, the head 361 of the movable contact 36a protrudes from the outer edge of the lower portion 18a2 of the movable spring 18 in the radial direction thereof. , The conductive plate 40 is fixed so as not to protrude from the outer edge of the first leg piece 40a. Similarly, when the movable contact 36b is caulked and fixed to the conductive plate 40 and the movable spring 18, the head 361 of the movable contact 36b is fixed so as not to protrude from the outer edge of the second leg piece 40b of the conductive plate 40 in its radial direction. Will be done. Further, when the movable contacts 36a and 36b are caulked and fixed to the conductive plate 40 and the movable spring 18, the conductive plate 40 is arranged between the movable spring 18 and the contact surface 363. That is, the contact surface 363 of the head 361 comes into contact with the conductive plate 40. As described above, in the present embodiment, since the conductive plate 40 is arranged between the movable spring 18 and the contact surface 363 so that the entire contact surface 363 comes into contact with the conductive plate 40, the conductive plate 40 is conductive from the movable contacts 36a and 36b. Current and heat can be efficiently transferred to the plate 40, and the energizing capacity of the relay can be increased.

図６（Ａ）は、固定端子２２ａ及び２２ｂの正面図であり、図６（Ｂ）は、固定端子２２ａ及び２２ｂの側面図である。 FIG. 6A is a front view of the fixed terminals 22a and 22b, and FIG. 6B is a side view of the fixed terminals 22a and 22b.

固定端子２２ａ及び２２ｂは、ベース２８に設けられた不図示の貫通孔に上方から圧入され、ベース２８に固定される。固定端子２２ａ及び２２ｂは、側面視でクランク状に曲げられている。固定端子２２ａ及び２２ｂの各々は、上部２２ｅ、傾斜部２２ｆ及び下部２２ｄを備えている。上部２２ｅは傾斜部２２ｆを介して下部２２ｄに連結され、上部２２ｅ、傾斜部２２ｆ及び下部２２ｄは一体形成されている。下部２２ｄは不図示の電源等に接続され、通電性能を向上するためにブレード端子になっている。ブレード端子とすることで、例えば二股端子と比べて基板への接触面積を増やせるので通電性能が向上する。上部２２ｅは下部２２ｄよりも可動ばね１８、導電板４０から離れるように曲げられている。上部２２ｅの上端２２ｇは、上部２２ｅの他の部分よりも可動ばね１８、導電板４０から離れるように曲げられている。固定端子２２ａ及び２２ｂの上部２２ｅには、固定接点３８ａ及び３８ｂがそれぞれ設けられている。 The fixing terminals 22a and 22b are press-fitted from above into a through hole (not shown) provided in the base 28 and fixed to the base 28. The fixed terminals 22a and 22b are bent in a crank shape in a side view. Each of the fixed terminals 22a and 22b includes an upper portion 22e, an inclined portion 22f and a lower portion 22d. The upper portion 22e is connected to the lower portion 22d via an inclined portion 22f, and the upper portion 22e, the inclined portion 22f and the lower portion 22d are integrally formed. The lower portion 22d is connected to a power source (not shown) or the like, and serves as a blade terminal in order to improve the energization performance. By using the blade terminal, the contact area with the substrate can be increased as compared with, for example, a bifurcated terminal, so that the energization performance is improved. The upper portion 22e is bent so as to be farther from the movable spring 18 and the conductive plate 40 than the lower portion 22d. The upper end 22g of the upper portion 22e is bent so as to be separated from the movable spring 18 and the conductive plate 40 more than the other parts of the upper portion 22e. Fixed contacts 38a and 38b are provided on the upper portions 22e of the fixed terminals 22a and 22b, respectively.

図１に戻り、絶縁カバー２０は樹脂で構成されており、絶縁カバー２０の天井部２０ｅには、鉄芯２４の頭部２４ａを露出する貫通孔２０ａが形成されている。絶縁カバー２０の底部には、絶縁カバー２０をベース２８に固定するために突起状の固定部２０ｂ及び２０ｃが形成されている。固定部２０ｂはベース２８の一端に係合し、固定部２０ｃはベース２８の不図示の孔に挿入される。また、樹脂で構成されたバックストップ２０ｄが絶縁カバー２０と一体形成されている。ストッパーとしてのバックストップ２０ｄは、コイル３０に電流が流れず電磁石装置３１がオフの場合に可動ばね１８と当接する。バックストップ２０ｄにより、可動ばね１８や継鉄３４などの金属部品同士の衝突音の発生を抑制でき、リレー１の作動音を低減できる。 Returning to FIG. 1, the insulating cover 20 is made of resin, and a through hole 20a that exposes the head portion 24a of the iron core 24 is formed in the ceiling portion 20e of the insulating cover 20. At the bottom of the insulating cover 20, protrusion-shaped fixing portions 20b and 20c are formed to fix the insulating cover 20 to the base 28. The fixing portion 20b engages with one end of the base 28, and the fixing portion 20c is inserted into a hole (not shown) of the base 28. Further, the backstop 20d made of resin is integrally formed with the insulating cover 20. The backstop 20d as a stopper comes into contact with the movable spring 18 when no current flows through the coil 30 and the electromagnet device 31 is off. The backstop 20d can suppress the generation of collision noise between metal parts such as the movable spring 18 and the joint iron 34, and can reduce the operating noise of the relay 1.

鉄芯２４は、スプール２６の頭部２６ｂに形成された貫通孔２６ａに挿入される。スプール２６はベース２８と一体形成され、コイル３０が巻線されている。鉄芯２４、スプール２６及びコイル３０は、電磁石装置３１を構成する。電磁石装置３１は電流のオン／オフに応じて接極子１６の平板部１６ａを引きつける。これにより、固定端子２２ａ及び２２ｂに対する可動ばね１８の開閉動作が実行される。ベース２８には、一対のコイル端子３２が圧入され、コイル端子３２にはそれぞれコイル３０の巻線が絡げられる。 The iron core 24 is inserted into a through hole 26a formed in the head portion 26b of the spool 26. The spool 26 is integrally formed with the base 28, and the coil 30 is wound around the spool 26. The iron core 24, the spool 26, and the coil 30 constitute an electromagnet device 31. The electromagnet device 31 attracts the flat plate portion 16a of the quadrupole 16 according to the on / off of the current. As a result, the opening / closing operation of the movable spring 18 with respect to the fixed terminals 22a and 22b is executed. A pair of coil terminals 32 are press-fitted into the base 28, and the windings of the coil 30 are entwined with the coil terminals 32, respectively.

継鉄３４は側面視でＬ字形の導電性の部材であり、ベース２８の裏面に固定される水平部３４ａと、水平部３４ａに対して垂直に立設される垂直部３４ｂとを備えている。垂直部３４ｂは、ベース２８の下方からベース２８及び絶縁カバー２０の不図示の貫通孔に圧入される。これにより、図２に示すように、垂直部３４ｂの上部の両端に設けられた突起部３４ｃが絶縁カバー２０の天井部２０ｅから突出する。固定板４４は、水平部３４ａに固定するためのフック部４４ａを有し、ベース２８の裏面に固定される。 The joint iron 34 is an L-shaped conductive member in a side view, and includes a horizontal portion 34a fixed to the back surface of the base 28 and a vertical portion 34b erected perpendicularly to the horizontal portion 34a. .. The vertical portion 34b is press-fitted into a through hole (not shown) of the base 28 and the insulating cover 20 from below the base 28. As a result, as shown in FIG. 2, the protrusions 34c provided at both ends of the upper portion of the vertical portion 34b project from the ceiling portion 20e of the insulating cover 20. The fixing plate 44 has a hook portion 44a for fixing to the horizontal portion 34a, and is fixed to the back surface of the base 28.

図７（Ａ）は、リレー１に流れる電流の向きを模式的に示す図であり、固定接点と可動接点とが離れている状態を図示している。図７（Ｂ）は固定端子２２ａ側から見た場合のアーク消弧を示す図であり、図７（Ｃ）は固定端子２２ｂ側から見た場合のアーク消弧を示す図である。図７（Ａ）〜図７（Ｃ）において、電流の流れる向きは矢印で示されている。 FIG. 7A is a diagram schematically showing the direction of the current flowing through the relay 1, and shows a state in which the fixed contact and the movable contact are separated from each other. FIG. 7B is a diagram showing arc extinguishing when viewed from the fixed terminal 22a side, and FIG. 7C is a diagram showing arc extinguishing when viewed from the fixed terminal 22b side. In FIGS. 7 (A) to 7 (C), the direction in which the current flows is indicated by an arrow.

図７（Ａ）では、固定端子２２ａ及び２２ｂのいずれか一方が不図示の電源側に接続され、他方が不図示の負荷側に接続されている。コイル３０に電流が流れると、鉄芯２４が平板部１６ａを吸着し、突起部３４ｃを支点として接極子１６が回動する。接極子１６の回動に伴って垂下部１６ｂ及び可動ばね１８が固定端子２２側に向けて回転し、可動接点３６ａ及び３６ｂはそれぞれ対応する固定接点３８ａ及び３８ｂに接触する。可動接点３６ａ及び３６ｂと固定接点３８ａ及び３８ｂとが接触している状態で、固定端子２２ｂを正極側として電圧が印加されると、電流は、図７（Ａ）に示すように、固定端子２２ｂ、固定接点３８ｂ、可動接点３６ｂ、導電板４０、可動ばね１８、可動接点３６ａ、固定接点３８ａ、固定端子２２ａの順に流れる。尚、可動接点３６ｂと可動接点３６ａとの間では、電流は導電板４０及び可動ばね１８の両方に流れる。コイル３０に流れる電流が切断されると、ヒンジばね１４の復元力によって接極子１６が図７（Ｂ）に示される反時計方向に回動する。接極子１６の回動によって、可動接点３６ａ及び３６ｂはそれぞれ固定接点３８ａ及び３８ｂから離れ始めるが、固定接点３８ａ及び３８ｂと可動接点３６ａ及び３６ｂとの間にアークが発生するため、可動接点３６ａ及び固定接点３８ａ間を流れる電流並びに可動接点３６ｂ及び固定接点３８ｂ間を流れる電流は完全には遮断されない。 In FIG. 7A, one of the fixed terminals 22a and 22b is connected to the power supply side (not shown), and the other is connected to the load side (not shown). When a current flows through the coil 30, the iron core 24 attracts the flat plate portion 16a, and the polaron 16 rotates with the protrusion 34c as a fulcrum. As the polaron 16 rotates, the hanging portion 16b and the movable spring 18 rotate toward the fixed terminal 22, and the movable contacts 36a and 36b come into contact with the corresponding fixed contacts 38a and 38b, respectively. When a voltage is applied with the fixed terminal 22b as the positive electrode side in a state where the movable contacts 36a and 36b and the fixed contacts 38a and 38b are in contact, the current is reduced to the fixed terminal 22b as shown in FIG. 7 (A). , Fixed contact 38b, movable contact 36b, conductive plate 40, movable spring 18, movable contact 36a, fixed contact 38a, fixed terminal 22a. Between the movable contact 36b and the movable contact 36a, a current flows through both the conductive plate 40 and the movable spring 18. When the current flowing through the coil 30 is cut off, the restoring force of the hinge spring 14 causes the polaron 16 to rotate counterclockwise as shown in FIG. 7 (B). Due to the rotation of the polaron 16, the movable contacts 36a and 36b start to separate from the fixed contacts 38a and 38b, respectively, but an arc is generated between the fixed contacts 38a and 38b and the movable contacts 36a and 36b, so that the movable contacts 36a and 36b The current flowing between the fixed contacts 38a and the current flowing between the movable contacts 36b and the fixed contacts 38b are not completely cut off.

図７（Ａ）〜（Ｃ）に図示するリレー１では、図７（Ｂ）に示すように磁界の向きは固定端子２２ａから固定端子２２ｂに向かう。従って、可動接点３６ａ及び固定接点３８ａ間に発生するアークは、ローレンツ力により図７（Ｂ）の矢印Ａで示すようにベース２８に向かう下方向の空間に引き伸ばされて消弧する。一方、可動接点３６ｂ及び固定接点３８ｂ間に発生するアークは、ローレンツ力により図７（Ｃ）の矢印Ｂで示すようにベース２８から離れる上方向の空間に引き伸ばされて消弧する。 In the relay 1 illustrated in FIGS. 7A to 7C, the direction of the magnetic field is from the fixed terminal 22a to the fixed terminal 22b as shown in FIG. 7B. Therefore, the arc generated between the movable contact 36a and the fixed contact 38a is stretched and extinguished by the Lorentz force in the downward space toward the base 28 as shown by the arrow A in FIG. 7 (B). On the other hand, the arc generated between the movable contact 36b and the fixed contact 38b is stretched by the Lorentz force into an upward space away from the base 28 as shown by the arrow B in FIG. 7 (C) and extinguished.

図８（Ａ）は、リレー１に流れる電流の向きを模式的に示す図であり、図８（Ｂ）は固定端子２２ａ側から見た場合のアーク消弧を示す図であり、図８（Ｃ）は固定端子２２ｂ側から見た場合のアーク消弧を示す図である。なお、電流の流れる向きは、図７（Ａ）〜図７（Ｃ）の例とは逆になっている。 FIG. 8 (A) is a diagram schematically showing the direction of the current flowing through the relay 1, and FIG. 8 (B) is a diagram showing the arc extinguishing when viewed from the fixed terminal 22a side. C) is a diagram showing arc extinguishing when viewed from the fixed terminal 22b side. The direction of current flow is opposite to that of the examples of FIGS. 7 (A) to 7 (C).

図８（Ａ）では、図７（Ａ）と同様に、固定端子２２ａ及び２２ｂのいずれか一方が電源側に接続され、他方が負荷側に接続されている。可動接点３６ａ及び３６ｂと固定接点３８ａ及び３８ｂとが接触している状態で、固定端子２２ａを正極側として電圧が印加されると、電流は、図８（Ａ）に示すように、固定端子２２ａ、固定接点３８ａ、可動接点３６ａ、導電板４０、可動ばね１８、可動接点３６ｂ、固定接点３８ｂ、固定端子２２ｂの順に流れる。そして、コイル３０に流れる電流が切断されると、ヒンジばね１４の復元力によって接極子１６が図８（Ｂ）に示される反時計方向に回動し、可動接点３６ａ及び３６ｂはそれぞれ固定接点３８ａ及び３８ｂから離れる。 In FIG. 8A, as in FIG. 7A, one of the fixed terminals 22a and 22b is connected to the power supply side, and the other is connected to the load side. When a voltage is applied with the fixed terminal 22a as the positive electrode side in a state where the movable contacts 36a and 36b and the fixed contacts 38a and 38b are in contact, the current is reduced to the fixed terminal 22a as shown in FIG. 8 (A). , Fixed contact 38a, movable contact 36a, conductive plate 40, movable spring 18, movable contact 36b, fixed contact 38b, fixed terminal 22b. Then, when the current flowing through the coil 30 is cut off, the restoring force of the hinge spring 14 causes the quadrupole 16 to rotate counterclockwise as shown in FIG. 8B, and the movable contacts 36a and 36b are fixed contacts 38a, respectively. And away from 38b.

図８（Ａ）〜（Ｃ）に図示するリレー１でも、磁界の向きは固定端子２２ａから固定端子２２ｂに向かう。従って、可動接点３６ａ及び固定接点３８ａ間に発生するアークは、ローレンツ力により図８（Ｂ）の矢印Ａで示すように上方向の空間に引き伸ばされて消弧され、可動接点３６ｂ及び固定接点３８ｂ間に発生するアークは、ローレンツ力により図８（Ｃ）の矢印Ｂで示すようにベース２８に向かう下方向の空間に引き伸ばされて消弧される。 Even in the relay 1 shown in FIGS. 8A to 8C, the direction of the magnetic field is from the fixed terminal 22a to the fixed terminal 22b. Therefore, the arc generated between the movable contact 36a and the fixed contact 38a is stretched and extinguished in the upward space as shown by the arrow A in FIG. 8B by the Lorentz force, and the movable contact 36b and the fixed contact 38b are extinguished. The arc generated between them is stretched and extinguished by the Lorentz force in the downward space toward the base 28 as shown by the arrow B in FIG. 8C.

従って、本実施の形態のリレー１によれば、可動接点３６ａ及び固定接点３８ａ間並びに可動接点３６ｂ及び固定接点３８ｂ間を流れる電流の向きに関わらず、可動接点３６ａ及び固定接点３８ａ間に発生するアークと可動接点３６ｂ及び固定接点３８ｂ間に発生するアークとを同時に、且つそれぞれ反対方向の空間にそれぞれ引き伸ばして消弧することができる。 Therefore, according to the relay 1 of the present embodiment, it is generated between the movable contact 36a and the fixed contact 38a regardless of the direction of the current flowing between the movable contact 36a and the fixed contact 38a and between the movable contact 36b and the fixed contact 38b. The arc and the arc generated between the movable contact 36b and the fixed contact 38b can be simultaneously extended into spaces in opposite directions to extinguish the arc.

図９（Ａ）は、可動ばね１８及び導電板４０の第１変形例を示す図である。図９（Ｂ）は、導電板４０の第２変形例を示す図である。 FIG. 9A is a diagram showing a first modification of the movable spring 18 and the conductive plate 40. FIG. 9B is a diagram showing a second modification of the conductive plate 40.

図９（Ａ）に示すように、中央に矩形の貫通孔５１が形成された金属板を折り曲げることによって可動ばね１８及び導電板４０を一体形成してもよい。この場合、貫通孔４２ａ及び１９ａ並びに貫通孔４２ｂ及び１９ｂは、折り曲げて重ね合わされた端部５０ａ及び５０ｂにそれぞれ形成される。また、貫通孔４２ａ及び１９ａ並びに貫通孔４２ｂ及び１９ｂは、プレス加工にて一括形成される。可動ばね１８及び導電板４０を１枚の導電板で形成することで、部品数を削減でき、組立工程の効率化が可能になる。また、貫通孔４２ａ及び１９ａ並びに貫通孔４２ｂ及び１９ｂは、折り曲げて重ね合わされた端部５０ａ及び５０ｂに一括形成されるので、貫通孔４２ａ及び１９ａの位置ズレ並びに貫通孔４２ｂ及び１９ｂの位置ズレが回避され、組立工程の効率化が可能になる。 As shown in FIG. 9A, the movable spring 18 and the conductive plate 40 may be integrally formed by bending a metal plate having a rectangular through hole 51 formed in the center. In this case, the through holes 42a and 19a and the through holes 42b and 19b are formed at the bent and overlapped end portions 50a and 50b, respectively. Further, the through holes 42a and 19a and the through holes 42b and 19b are collectively formed by press working. By forming the movable spring 18 and the conductive plate 40 with one conductive plate, the number of parts can be reduced and the efficiency of the assembly process can be improved. Further, since the through holes 42a and 19a and the through holes 42b and 19b are collectively formed at the end portions 50a and 50b which are bent and overlapped with each other, the through holes 42a and 19a are misaligned and the through holes 42b and 19b are misaligned. This is avoided and the efficiency of the assembly process can be improved.

図９（Ｂ）に示すように、中央に矩形の貫通孔５２が形成された薄い金属板を折り曲げることにより２枚重ねの導電板４０を形成してもよい。１枚の厚い導電板に比べて、剛性の上昇を抑えて、通電容量を向上させることができる。 As shown in FIG. 9B, a two-layered conductive plate 40 may be formed by bending a thin metal plate having a rectangular through hole 52 formed in the center. Compared with one thick conductive plate, the increase in rigidity can be suppressed and the energization capacity can be improved.

図１０（Ａ）は、導電板４０の第３変形例を示す図である。図１０（Ｂ）は図１０（Ａ）の導電板４０の側面図である。図１０（Ｃ）は、導電板４０の第４変形例を示す図である。図１０（Ｄ）は図１０（Ｃ）の導電板４０の側面図である。 FIG. 10A is a diagram showing a third modification of the conductive plate 40. 10 (B) is a side view of the conductive plate 40 of FIG. 10 (A). FIG. 10C is a diagram showing a fourth modification of the conductive plate 40. 10 (D) is a side view of the conductive plate 40 of FIG. 10 (C).

図１０（Ａ）及び図１０（Ｂ）に示すように、導電板４０の第１脚片４０ａ及び第２脚片４０ｂを、かしめ固定された可動接点３６ａ及び３６ｂが上方にはみ出ない位置４１ａ及び位置４１ｂで折曲加工してもよい。ここで、第１脚片４０ａの位置４１ａより下を下部４０ａ２とし、位置４１ａより上を上部４０ａ１とする。同様に、第２脚片４０ｂの位置４１ｂより下を下部４０ｂ２とし、位置４１ｂより上を上部４０ｂ１とする。下部４０ａ２及び４０ｂ２は、第１領域として機能し、上部４０ａ１及び４０ｂ１は、第２領域として機能する。 As shown in FIGS. 10A and 10B, the positions 41a and the positions 41a where the movable contacts 36a and 36b crimped and fixed to the first leg piece 40a and the second leg piece 40b of the conductive plate 40 do not protrude upward. It may be bent at position 41b. Here, the lower part 40a2 is below the position 41a of the first leg piece 40a, and the upper part 40a1 is above the position 41a. Similarly, the lower part 40b2 is below the position 41b of the second leg piece 40b, and the upper part 40b1 is above the position 41b. The lower 40a2 and 40b2 function as a first region, and the upper 40a1 and 40b1 function as a second region.

上部４０ａ１、上部４０ｂ１及び連結部４０ｃは、可動接点３６ａ及び３６ｂがそれぞれ接触する固定接点３８ａ及び３８ｂから離れる方向に折り曲げられている。この場合、固定端子２２ａ及び２２ｂと導電板４０との間の間隔が固定端子２２ａ及び２２ｂから上方に向かって徐々に広がるので、アークを上方向の空間に移動させながら効率的に消弧することができる。 The upper portion 40a1, the upper portion 40b1, and the connecting portion 40c are bent in a direction away from the fixed contacts 38a and 38b with which the movable contacts 36a and 36b are in contact, respectively. In this case, since the distance between the fixed terminals 22a and 22b and the conductive plate 40 gradually increases upward from the fixed terminals 22a and 22b, the arc is efficiently extinguished while being moved to the upward space. Can be done.

さらに、図１０（Ｃ）及び図１０（Ｄ）に示すように、導電板４０の第１脚片４０ａ及び第２脚片４０ｂを、可動接点３６ａ及び３６ｂが下方にはみ出ない位置４３ａ及び位置４３ｂでそれぞれ折曲加工してもよい。ここで、下部４０ａ２は位置４１ａと位置４３ａとの間の部分であり、下部４０ｂ２は位置４１ｂと位置４３ｂとの間の部分であり、第１脚片４０ａの位置４３ａより下を最下部４０ａ３とし、第２脚片４０ｂの位置４３ｂより下を最下部４０ｂ３とする。 Further, as shown in FIGS. 10 (C) and 10 (D), the first leg piece 40a and the second leg piece 40b of the conductive plate 40 are placed at positions 43a and 43b where the movable contacts 36a and 36b do not protrude downward. You may bend each of them. Here, the lower portion 40a2 is a portion between the position 41a and the position 43a, the lower portion 40b2 is a portion between the position 41b and the position 43b, and the lowermost portion 40a3 below the position 43a of the first leg piece 40a is defined as the lowermost portion 40a3. , The lowermost portion 40b3 is below the position 43b of the second leg piece 40b.

最下部４０ａ３及び４０ｂ３は、それぞれ固定接点３８ａ及び３８ｂから離れる方向に折り曲げられている。この場合、固定端子２２ａ及び２２ｂと導電板４０との間の間隔が固定端子２２ａ及び２２ｂから下方に向かって徐々に広がるので、最下部４０ａ３及び４０ｂ３によりアークを下方向の空間に移動させながら効率的に消弧することができる。 The lowermost portions 40a3 and 40b3 are bent in a direction away from the fixed contacts 38a and 38b, respectively. In this case, since the distance between the fixed terminals 22a and 22b and the conductive plate 40 gradually increases downward from the fixed terminals 22a and 22b, the lowermost portions 40a3 and 40b3 move the arc into the downward space for efficiency. Can be extinguished.

以上説明したように、本実施の形態では、導電板４０は、頭部３６１と可動ばね１８との間に配置され、可動ばね１８の貫通孔１９ａ及び１９ｂ並びに導電板４０の貫通孔４２ａ及び４２ｂの径方向において、頭部３６１は下部１８ａ２及び１８ｂ２の外縁からはみ出しても、導電板４０の外縁からはみ出さない。従って、頭部３６１の全体が接触する導電板４０を可動ばね１８の下部１８ａ２及び下部１８ｂ２と頭部３６１との間に配置するので、可動接点３６ａ及び３６ｂから導電板４０に電流や熱を効率的に伝えることができ、通電容量を増大させることができる。また、かしめ固定された脚部３６２は貫通孔１９ａ及び１９ｂの径方向において下部１８ａ２及び１８ｂ２の外縁からはみ出さない。 As described above, in the present embodiment, the conductive plate 40 is arranged between the head head 361 and the movable spring 18, and the through holes 19a and 19b of the movable spring 18 and the through holes 42a and 42b of the conductive plate 40 are arranged. In the radial direction of the head 361, even if it protrudes from the outer edges of the lower portions 18a2 and 18b2, it does not protrude from the outer edge of the conductive plate 40. Therefore, since the conductive plate 40 with which the entire head 361 is in contact is arranged between the lower 18a2 and the lower 18b2 of the movable spring 18 and the head 361, current and heat are efficiently transferred from the movable contacts 36a and 36b to the conductive plate 40. The current-carrying capacity can be increased. Further, the caulked and fixed leg portion 362 does not protrude from the outer edges of the lower portions 18a2 and 18b2 in the radial direction of the through holes 19a and 19b.

また、通電容量を増大させる導電板４０が設けられているので、可動ばね１８の通電容量を考慮することなくばね負荷設計の自由度が向上する。さらに、可動ばね１８のサイズを変更できないような構造上の制約がある場合でも、導電板４０を設けることで通電容量を向上させることができる。さらに、導電板４０を熱伝導率の高い材料で構成することで、アークの熱を効率的に冷却することができ、可動接点３６ａ及び３６ｂの開閉性能を向上させることができる。 Further, since the conductive plate 40 for increasing the energizing capacity is provided, the degree of freedom in spring load design is improved without considering the energizing capacity of the movable spring 18. Further, even if there is a structural restriction that the size of the movable spring 18 cannot be changed, the energization capacity can be improved by providing the conductive plate 40. Further, by forming the conductive plate 40 with a material having high thermal conductivity, the heat of the arc can be efficiently cooled, and the opening / closing performance of the movable contacts 36a and 36b can be improved.

尚、本発明は、上述した実施の形態に限定されるものではなく、その要旨を逸脱しない範囲内で種々変形して実施することが可能である。 The present invention is not limited to the above-described embodiment, and can be variously modified and implemented within a range that does not deviate from the gist thereof.

１ 電磁継電器
１０ ケース
１２ 永久磁石
１４ ヒンジばね
１６ 接極子
１８ 可動ばね
１９ａ，１９ｂ，４２ａ，４２ｂ 貫通孔
２０ 絶縁カバー
２２，２２ａ，２２ｂ 固定端子
２４ 鉄芯
２６ スプール
２８ ベース
３０ コイル
３２，３２ａ，３２ｂ コイル端子
３４ 継鉄
３６ａ，３６ｂ 可動接点
３８ａ，３８ｂ 固定接点
４０ 導電板 1 Electromagnetic relay 10 Case 12 Permanent magnet 14 Hinge spring 16 Connector 18 Movable spring 19a, 19b, 42a, 42b Through hole 20 Insulation cover 22, 22a, 22b Fixed terminal 24 Iron core 26 Spool 28 Base 30 Coil 32, 32a, 32b Coil terminal 34 Relay iron 36a, 36b Movable contact 38a, 38b Fixed contact 40 Conductive plate

Claims (6)

固定接点を有する固定端子と、
第１貫通孔が形成された可動片を含む可動ばねと、
第２貫通孔を有する導電板と、
前記固定接点と接離する頭部と、前記第１貫通孔及び前記第２貫通孔に挿通される脚部とを有する可動接点とを備え、
前記導電板は、前記頭部と前記可動ばねとの間に配置され、
前記第１貫通孔及び前記第２貫通孔の径方向において前記頭部は前記導電板の外縁からはみ出さず、前記可動片の外縁からはみ出すことを特徴とする電磁継電器。 Fixed terminals with fixed contacts and
A movable spring containing a movable piece in which the first through hole is formed, and
A conductive plate with a second through hole and
A movable contact having a head that comes into contact with and separates from the fixed contact, and a leg that is inserted through the first through hole and the second through hole.
The conductive plate is arranged between the head and the movable spring.
An electromagnetic relay characterized in that the head does not protrude from the outer edge of the conductive plate in the radial direction of the first through hole and the second through hole, but protrudes from the outer edge of the movable piece. 前記導電板は前記可動ばねよりも高い導電率及び高い熱伝導率を有することを特徴とする請求項１に記載の電磁継電器。 The electromagnetic relay according to claim 1, wherein the conductive plate has a higher conductivity and a higher thermal conductivity than the movable spring. 前記導電板は、２枚重ねの構造を有することを特徴とする請求項１又は２に記載の電磁継電器。 The electromagnetic relay according to claim 1 or 2, wherein the conductive plate has a structure of two layers. 前記導電板は、前記可動接点が配置される第１領域と、前記第１領域に隣接する第２領域とを備え、前記第２領域は前記固定接点から離れる方向に折り曲げられていることを特徴とする請求項１乃至３のいずれか１項に記載の電磁継電器。 The conductive plate includes a first region in which the movable contact is arranged and a second region adjacent to the first region, and the second region is bent in a direction away from the fixed contact. The electromagnetic relay according to any one of claims 1 to 3. 前記可動ばね及び前記導電板は一体形成されていることを特徴とする請求項１に記載の電磁継電器。 The electromagnetic relay according to claim 1, wherein the movable spring and the conductive plate are integrally formed. 前記固定端子は、各々前記固定接点を有する第１固定端子及び第２固定端子を含み、
前記可動ばねは、各々前記第１貫通孔が形成された第１可動片及び第２可動片を含み、
前記電磁継電器は、
前記可動ばねに連結される接極子を駆動する電磁石装置と、
前記電磁石装置を覆うカバーと
を備えることを特徴とする請求項１乃至５のいずれか１項に記載の電磁継電器。 The fixed terminal includes a first fixed terminal and a second fixed terminal having the fixed contact, respectively.
The movable spring includes a first movable piece and a second movable piece in which the first through hole is formed, respectively.
The electromagnetic relay is
An electromagnet device that drives a polaron connected to the movable spring,
The electromagnetic relay according to any one of claims 1 to 5, further comprising a cover for covering the electromagnet device.
JP2016216653A 2016-11-04 2016-11-04 Electromagnetic relay Active JP6959728B2 (en)

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